Martin 12S516-R Sectional Conveyor Screw Trough With Buttweld Flighting, 12 in Dia x 141 in L, Steel
The letter "S" indicates screw conveyor with butt weld flighting. The figures to the left of the letters indicate the nominal outside diameter of the conveyor in inches. The first figure following the letters is twice the diameter of the coupling in 1/64 in. Right hand flight helix wraps around the pipe in a clockwise direction.
Martin Conveyor Screw Trough, Sectional, 12 in Dia, 141 in Length, Steel